Ball Screw RCA: Breakage of Ball Recirculation Parts

 

Damage Condition

Damage on the tongue of ball return tube (ball pick up finger).

Possible Causes

  • Rotational speed exceeded the permissible rotational speed (d•N)

Countermeasures

  • Use of a ball return tube that meets the actual d•N value
  • Change to end-deflectors ball screws enabling higher speeds


Breakage of Ball Recirculation Parts

Part: Ball return tube
Symptom: Damage on the tongue of ball return tube
Cause: High-speed operation exceeded the permissible rotational speed (d•N)

Source: NSK